<template>
    <div id="aCoursesList" class="bg-fa of">
        <!-- 课程详情 开始 -->
        <section class="container">

            <!-- 课程所属分类 开始 -->
            <section class="path-wrap txtOf hLh30">
                <a href="#" title class="c-999 fsize14">首页</a>
                \
                <a href="/course" title class="c-999 fsize14">课程列表</a>
                \
                <span class="c-333 fsize14">{{ course.subjectLevelOne }}</span>
                \
                <span class="c-333 fsize14">{{ course.subjectLevelTwo }}</span>
            </section>
            <!-- /课程所属分类 结束 -->

            <!-- 课程基本信息 开始 -->
            <div>
                <article class="c-v-pic-wrap" style="height: 357px;">
                    <section id="videoPlay" class="p-h-video-box">
                        <img height="357px" :src="course.cover" :alt="course.title" class="dis c-v-pic">
                    </section>
                </article>
                <aside class="c-attr-wrap">
                    <section class="ml20 mr15">
                        <h2 class="hLh30 txtOf mt15">
                            <span class="c-fff fsize24">{{ course.title }}</span>
                        </h2>
                        <section class="c-attr-jg">
                            <span class="c-fff">价格：</span>
                            <b class="c-yellow" style="font-size:24px;">￥{{ course.price }}</b>
                        </section>
                        <section class="c-attr-mt c-attr-undis">
                            <span class="c-fff fsize14">主讲： {{ course.teacherName }}&nbsp;&nbsp;&nbsp;</span>
                        </section>
                        <section class="c-attr-mt of">
                            <span class="ml10 vam">
                                <em class="icon18 scIcon" />
                                <a class="c-fff vam" title="收藏" href="#">收藏</a>
                            </span>
                        </section>
                        <!-- 根据支付状态判断是否购买过 -->
                        <section v-if="isBuyCourse || Number(course.price)===0" class="c-attr-mt">
                            <a href="#" title="立即观看" class="comm-btn c-btn-3">立即观看</a>
                        </section>
                        <section v-else class="c-attr-mt">
                            <!-- 点击调到订单页面 -->
                            <a href="#" title="立即购买" class="comm-btn c-btn-3" @click="createOrder()">立即购买</a>
                        </section>
                    </section>
                </aside>
                <aside class="thr-attr-box">
                    <ol class="thr-attr-ol">
                        <li>
                            <p>&nbsp;</p>
                            <aside>
                                <span class="c-fff f-fM">购买数</span>
                                <br>
                                <h6 class="c-fff f-fM mt10">{{ course.buyCount }}</h6>
                            </aside>
                        </li>
                        <li>
                            <p>&nbsp;</p>
                            <aside>
                                <span class="c-fff f-fM">课时数</span>
                                <br>
                                <h6 class="c-fff f-fM mt10">{{ course.lessonNum }}</h6>
                            </aside>
                        </li>
                        <li>
                            <p>&nbsp;</p>
                            <aside>
                                <span class="c-fff f-fM">浏览数</span>
                                <br>
                                <h6 class="c-fff f-fM mt10">{{ course.viewCount }}</h6>
                            </aside>
                        </li>
                    </ol>
                </aside>
                <div class="clear" />
            </div>
            <!-- /课程基本信息 结束 -->

            <div class="mt20 c-infor-box">
                <article class="fl col-7">
                    <section class="mr30">
                        <div class="i-box">
                            <div>
                                <section id="c-i-tabTitle" class="c-infor-tabTitle c-tab-title">
                                    <a name="c-i" class="current" title="课程详情">课程详情</a>
                                </section>
                            </div>
                            <article class="ml10 mr10 pt20">

                                <!-- 课程详情介绍 开始 -->
                                <div>
                                    <h6 class="c-i-content c-infor-title">
                                        <span>课程介绍</span>
                                    </h6>
                                    <div class="course-txt-body-wrap">
                                        <section class="course-txt-body">
                                            <!-- 将内容中的html翻译过来 -->
                                            <p v-html="course.description"></p>
                                        </section>
                                    </div>
                                </div>
                                <!-- /课程详情介绍 结束 -->

                                <!-- 课程大纲 开始-->
                                <div class="mt50">
                                    <h6 class="c-g-content c-infor-title">
                                        <span>课程大纲</span>
                                    </h6>
                                    <section class="mt20">
                                        <div class="lh-menu-wrap">
                                            <menu id="lh-menu" class="lh-menu mt10 mr10">
                                                <ul>
                                                    <!-- 课程章节目录 -->
                                                    <li v-for="chapter in chapterList" :key="chapter.id"
                                                        class="lh-menu-stair">
                                                        <a :title="chapter.title" href="javascript: void(0)"
                                                            class="current-1">
                                                            <em class="lh-menu-i-1 icon18 mr10" />{{ chapter.title }}
                                                        </a>
                                                        <ol class="lh-menu-ol" style="display: block;">
                                                            <li v-for="video in chapter.children" :key="video.id"
                                                                class="lh-menu-second ml30">
                                                                <!-- 视频播放 -->
                                                                <a @click="playVideo(video.videoSourceId)"
                                                                    :title="video.title" target="_blank">
                                                                    <span v-if="video.free === true" class="fr">
                                                                        <i class="free-icon vam mr10">免费试听</i>
                                                                    </span>
                                                                    <em class="lh-menu-i-2 icon16 mr5">&nbsp;</em>{{
                                                                    video.title }}
                                                                </a>
                                                            </li>
                                                        </ol>
                                                    </li>
                                                </ul>
                                            </menu>
                                        </div>
                                    </section>
                                </div>

                                <!-- 评论功能开始 -->
                                <div class="mt50 commentHtml">
                                    <div>
                                        <h6 class="c-c-content c-infor-title" id="i-art-comment">
                                            <span class="commentTitle">课程评论</span>
                                        </h6>
                                        <section class="lh-bj-list pr mt20 replyhtml">
                                            <ul>
                                                <li class="unBr">
                                                    <aside class="noter-pic">
                                                        <img width="50" height="50" class="picImg"
                                                            src="~/assets/img/avatar-boy.gif">
                                                    </aside>
                                                    <div class="of">
                                                        <section class="n-reply-wrap">
                                                            <fieldset>
                                                                <textarea name="" v-model="comment.content"
                                                                    placeholder="输入您要评论的文字"
                                                                    id="commentContent"></textarea>
                                                            </fieldset>
                                                            <p class="of mt5 tar pl10 pr10">
                                                                <span class="fl "><tt class="c-red commentContentmeg"
                                                                        style="display: none;"></tt></span>
                                                                <input type="button" @click="addComment()" value="回复"
                                                                    class="lh-reply-btn">
                                                            </p>
                                                        </section>
                                                    </div>
                                                </li>
                                            </ul>
                                        </section>
                                        <section class="">
                                            <section class="question-list lh-bj-list pr">
                                                <ul class="pr10">
                                                    <li v-for="(comment,index) in data.items" v-bind:key="index">
                                                        <aside class="noter-pic">
                                                            <img width="50" height="50" class="picImg"
                                                                :src="comment.avatar">
                                                        </aside>
                                                        <div class="of">
                                                            <span class="fl">
                                                                <font class="fsize12 c-blue">
                                                                    {{comment.nickname}}</font>
                                                                <font class="fsize12 c-999 ml5">评论：</font>
                                                            </span>
                                                        </div>
                                                        <div class="noter-txt mt5">
                                                            <p>{{comment.content}}</p>
                                                        </div>
                                                        <div class="of mt5">
                                                            <span class="fr">
                                                                <font class="fsize12 c-999 ml5">{{comment.gmtCreate}}
                                                                </font>
                                                            </span>
                                                        </div>
                                                    </li>

                                                </ul>
                                            </section>
                                        </section>
                                        <!-- 公共分页 开始 -->
                                        <div class="paging">
                                            <!-- undisable这个class是否存在，取决于数据属性hasPrevious -->
                                            <a :class="{undisable: !data.hasPrevious}" href="#" title="首页"
                                                @click.prevent="gotoPage(1)">首</a>
                                            <a :class="{undisable: !data.hasPrevious}" href="#" title="前一页"
                                                @click.prevent="gotoPage(data.current-1)">&lt;</a>
                                            <a v-for="page in data.pages" :key="page"
                                                :class="{current: data.current == page, undisable: data.current == page}"
                                                :title="'第'+page+'页'" href="#" @click.prevent="gotoPage(page)">{{ page
                                                }}</a>
                                            <a :class="{undisable: !data.hasNext}" href="#" title="后一页"
                                                @click.prevent="gotoPage(data.current+1)">&gt;</a>
                                            <a :class="{undisable: !data.hasNext}" href="#" title="末页"
                                                @click.prevent="gotoPage(data.pages)">末</a>
                                            <div class="clear" />
                                        </div>
                                        <!-- 公共分页 结束 -->
                                    </div>
                                </div>
                                <!-- 评论功能结束 -->

                                <!-- /课程大纲 结束 -->
                            </article>
                        </div>
                    </section>
                </article>
                <aside class="fl col-3">
                    <div class="i-box">
                        <!-- 主讲讲师 开始-->
                        <div>
                            <section class="c-infor-tabTitle c-tab-title">
                                <a title href="javascript:void(0)">主讲讲师</a>
                            </section>
                            <section class="stud-act-list">
                                <ul style="height: auto;">
                                    <li>
                                        <div class="u-face">
                                            <a :href="'/teacher/'+course.teacherId" target="_blank">
                                                <img :src="course.avatar" width="50" height="50" alt>
                                            </a>
                                        </div>
                                        <section class="hLh30 txtOf">
                                            <a :href="'/teacher/'+course.teacherId" class="c-333 fsize16 fl"
                                                target="_blank">{{ course.teacherName }}</a>
                                        </section>
                                        <section class="hLh20 txtOf">
                                            <span class="c-999">{{ course.intro }}</span>
                                        </section>
                                    </li>
                                </ul>
                            </section>
                        </div>
                        <!-- /主讲讲师 结束 -->
                    </div>
                </aside>
                <div class="clear" />
            </div>

        </section>
        <!-- /课程详情 结束 -->

    </div>
</template>
<script>
import course from "@/api/course"
import comment from '@/api/commonedu'
import order from "@/api/order"

export default {

    // asyncData({ params, error }) {
    //     return course.getById(params.id).then(response => {
    //         // console.log(response);
    //         return {
    //             course: response.data.data.course,
    //             chapterList: response.data.data.chapterVoList
    //         }
    //     })
    // },

    // 添加评论
    asyncData({ params, error }) {
        return { courseId: params.id }
    },
    data() {
        return {
            data: {},
            page: 1,
            limit: 4,
            total: 10,
            comment: {
                content: '',
                courseId: ''
            },
            course: {},
            chapterList: [],
            isBuyCourse: false
        }
    },
    created() {
        this.initCourseInfo()
        this.initComment()
    },

    methods: {
        // 自定义播放地址
        playVideo(videoId) {
            // alert(videoId)
            window.open("http://localhost:9001/videos/" + videoId, "_blank")
        },
        //获取课程详情
        initCourseInfo() {
            course.getById(this.courseId)
                .then(response => {
                    this.course = response.data.data.course
                    this.chapterList = response.data.data.chapterVoList
                    this.isBuyCourse = response.data.data.isBuyCourse
                })
        },
        initComment() {
            comment.getPageList(this.page, this.limit, this.courseId).then(response => {
                this.data = response.data.data
            })
        },
        addComment() {
            this.comment.courseId = this.courseId
            this.comment.teacherId = this.course.teacherId
            comment.addComment(this.comment).then(response => {
                if (response.data.success) {
                    this.comment.content = ''
                    this.initComment()
                }
            })
        },
        gotoPage(page) {
            comment.getPageList(page, this.limit, this.courseId).then(response => {
                this.data = response.data.data
            })
        },
        createOrder() {
            order.createOrder(this.courseId).then(response => {
                if (response.data.success) {
                    //订单创建成功，跳转到订单页面
                    this.$router.push({ path: '/order/' + response.data.data.orderId })
                }
            }).catch(() => {
                this.$router.push({ path: '/login/' })
            })
        }

    }

}
</script>
  